21ic.com 21IC电子网 - 电子工程师的优选网站

21IC电子网,电子工程师的优选网站(嵌入式,单片机,DSP,EDA,测试测量,元器件,医疗电子,智能电网)


21ic.com Overview

21IC.com is a Chinese website that focuses on electronic engineering. The website caters to a user base of Chinese electronic engineers who are looking for information on embedded systems, single-chip microcomputers, digital signal processing, electronic design automation, testing and measurement, components, medical electronics, and intelligent power grids.

The website has a clean and professional layout with a navy blue and white color scheme. The website's logo is prominently displayed on the top left side of the page alongside a search bar and several navigation links. Additionally, the website features a series of drop-down menus that enable users to access different pages and sections of the website with ease.

21IC.com is hosted by Hangzhou Alibaba Advertising Co., Ltd., and it has a domain authority value of 32 out of 100, according to Moz. The website is estimated to have 23,895 unique visitors per day, with users spending an average of 10 minutes and 36 seconds on the site. Its pageviews stand at 64,516.5, and it has an estimated site value of $1,130,040 in US dollars.

Being a website that provides engineering information, 21IC.com is not considered a family-friendly site.

When it comes to page speed, the website has a score of 53 out of 100 on PageSpeed Insights. This score puts the site in the average category, indicating that while some improvements can be made to improve the website's loading speed, the current state is satisfactory.

In conclusion, 21IC.com is an excellent website for Chinese electronics engineers. Its layout, content, and features make it easy to navigate and access information, and its pageviews and site value data point to a wide user base that finds the site helpful. However, there is room for improvement when it comes to page speed.


21ic.com Rank Summary

Global Rank
10,532
Average Load Time
1.11sec
Links In Count
676
Website Value
$1.1 M

21ic.com Website Safety

logo
Overview
Last Updated: 11/22/2024
Overall result - 21ic.com is safe.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton connect safe logo
Norton Connect Safe
Last Updated: 03/21/2024
21ic.com is safe.
Norton ConnectSafe evaluates 21ic.com for any unsafe and insecure content. The results are critical for families with young children.
Google logo
Google Safe Search
Last Updated: 02/07/2019
21ic.com is safe.
SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.
Google safe brwosing logo
Google Safe Browsing
Last Updated: 01/09/2019
21ic.com is safe.
Malware: not found.
Phishing: not detected.
Unwanted software: not found.
Harmfull applications: not found.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
McAfee logo
Site Advisor
Last Updated: 02/22/2021
21ic.com is safe.
McAfee assesses 21ic.com for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze 21ic.com for mature or inappropriate content, only security checks are evaluated.
Web of trust logo
Web of Trust
Last Updated: 01/09/2019
21ic.com child safety is very good.
The WOT calculates reputation of the 21ic.com. This reputation system receives ratings from users and information from third-party sources, assesses the 21ic.com for safety features and confirms, whether 21ic.com is suitable for children.

SSL Information
Domain*.21ic.com
Issuer OrganizationDigiCert Inc
IssuerEncryption Everywhere DV TLS CA - G1
AlgorithmRSA-SHA256
Valid form01/29/2024
Expiration02/14/2025
SignedCertificate is not self signed
Additional Domains *.21ic.com
21ic.com

21ic.com Rank History

21ic.com Hosting Information

Server Location

ASN Information

Last Update: 07/16/2024

% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS37888 - AS38911'

as-block: AS37888 - AS38911
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2009-09-29T06:04:16Z
source: APNIC

role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC

% Information related to 'AS37936 - AS37970'

as-block: AS37936 - AS37970
descr: CNNIC ASN block
country: CN
remarks: These AS numbers are further assigned by CNNIC
remarks: to CNNIC members and end-users in China
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tech-c: IPAS1-AP
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source: APNIC

role: CNNIC IPAS CONFEDERATION
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nic-hdl: IPAS1-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-09-12T07:40:01Z
source: APNIC

% Information related to 'AS37963'

% Abuse contact for 'AS37963' is 'ipas@cnnic.cn'

aut-num: AS37963
as-name: CNNIC-ALIBABA-CN-NET-AP
descr: Hangzhou Alibaba Advertising Co.,Ltd.
descr: East Software Park, 99 Huaxing Rd.
descr: Hangzhou, China
country: CN
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tech-c: ZM876-AP
tech-c: ZM875-AP
import: from AS4837
action pref=100;
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announce AS37963
mnt-routes: MAINT-CNNIC-AP
mnt-by: MAINT-CNNIC-AP
mnt-irt: IRT-CNNIC-CN
last-modified: 2013-07-24T02:44:02Z
source: APNIC

irt: IRT-CNNIC-CN
address: Beijing, China
e-mail: ipas@cnnic.cn
abuse-mailbox: ipas@cnnic.cn
admin-c: IP50-AP
tech-c: IP50-AP
auth: # Filtered
remarks: Please note that CNNIC is not an ISP and is not
remarks: empowered to investigate complaints of network abuse.
remarks: Please contact the tech-c or admin-c of the network.
mnt-by: MAINT-CNNIC-AP
last-modified: 2017-11-01T08:57:39Z
source: APNIC

person: Shuo Yu
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
fax-no: +86-0571-85022600
e-mail: shuo.yus@alibaba-inc.com
e-mail: shuo.yus@aliyun-inc.com
nic-hdl: ZM678-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2011-11-02T03:36:02Z
source: APNIC

person: Guoxin Gao
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022600
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e-mail: anti-spam@list.alibaba-inc.com
nic-hdl: ZM875-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2014-07-30T01:56:01Z
source: APNIC

person: security trouble
e-mail: cloud-cc-sqcloud@list.alibaba-inc.com
address: 5th,floor,Building D,the West Lake International Plaza of S&T,391#Wen’er Road
address: Hangzhou, Zhejiang, China
phone: +86-0571-85022600
country: CN
mnt-by: MAINT-CNNIC-AP
nic-hdl: ZM876-AP
last-modified: 2013-07-08T02:56:02Z
source: APNIC

person: Guowei Pan
address: 5F, Builing D, the West Lake International Plaza of S&T
address: No.391 Wen'er Road, Hangzhou City
address: Zhejiang, China, 310099
country: CN
phone: +86-0571-85022088-30763
fax-no: +86-0571-85022600
e-mail: guowei.pangw@alibaba-inc.com
nic-hdl: ZM877-AP
mnt-by: MAINT-CNNIC-AP
last-modified: 2013-07-09T01:34:02Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US4)

21ic.com Domain Registration and Settings

WHOIS

Domain Name: 21IC.COM
Registry Domain ID: 17040411_DOMAIN_COM-VRSN
Registrar WHOIS Server: grs-whois.hichina.com
Registrar URL: http://www.net.cn
Updated Date: 2024-01-04T07:34:20Z
Creation Date: 2000-01-10T02:41:29Z
Registry Expiry Date: 2026-01-10T02:41:29Z
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registrar IANA ID: 420
Registrar Abuse Contact Email: DomainAbuse@service.aliyun.com
Registrar Abuse Contact Phone: +86.95187
Domain Status: ok https://icann.org/epp#ok
Name Server: DNS1.HICHINA.COM
Name Server: DNS2.HICHINA.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2024-09-10T21:59:46Z


DNS Records
HostA RecordTTL
21ic.com182.92.121.1243600
HostMX RecordPriorityTTL
21ic.commx2.qiye.aliyun.com10600
21ic.commx3.qiye.aliyun.com15600
21ic.commx1.qiye.aliyun.com5600
HostNS RecordTTL
21ic.comdns2.hichina.com86400
21ic.comdns1.hichina.com86400
HostTXT RecordTTL
21ic.comv=spf1 include:spf.qiye.aliyun.com -all600

dns1.hichina.com
TTL: 600
Email address: hostmaster.hichina.com
Serial: 2024082817
Refresh: 3600
Retry: 1200
Expire: 86400
Minimum: 600

21ic.com HTML Check


Errors
Warnings

21ic.com Desktop Performance

Last tested: 02/01/2018

Speedometer image
Desktop Speed
42%

Desktop Resource Breakdown
Total Resources164
Number of Hosts15
Static Resources125
JavaScript Resources26
CSS Resources4

21ic.com Mobile Insights

Last tested: 05/30/2017

Speedometer image
Mobile Usability
83%
Speedometer image
Mobile Speed
53%

Mobile Resource Breakdown
Total Resources43
Number of Hosts13
Static Resources23
JavaScript Resources19
CSS Resources1

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